CN209761519U

CN209761519U - Engine oil protection device for mining auxiliary transport vehicle engine

Info

Publication number: CN209761519U
Application number: CN201920332717.4U
Authority: CN
Inventors: 卢明立; 王磊
Original assignee: Lianyungang Tianming Equipment Co Ltd
Current assignee: Lianyungang Tianming Equipment Co Ltd
Priority date: 2019-03-16
Filing date: 2019-03-16
Publication date: 2019-12-10
Anticipated expiration: 2029-03-16

Abstract

The engine oil protection device for the engine of the mining auxiliary transport vehicle comprises an air source pipeline connected with an air starter, wherein an air path switch valve and a starting valve are arranged on the air source pipeline. The air cylinder and the oil cylinder are connected in parallel and connected with the shuttle valve. One end of the shuttle valve is connected with an air source pipeline between the air path switch valve and the starting valve through an air path I, and the air path I is provided with a stop valve; the other end of the valve body is connected with a gas circuit II connected with a gas source, a pilot control valve II is arranged on the gas circuit II, and a pilot control valve I is arranged between the pilot control valve II and the shuttle valve. The driving end of the pilot control valve I is communicated with an engine oil pressure pipeline of the engine, and the driving end of the pilot control valve II is connected with an air source pipeline between the starting valve and the air starter through an air channel III; and a delay valve is arranged on the gas path III, and a gas storage pipe is arranged between the delay valve and the pilot control valve II. The utility model discloses can realize automatic shutdown under abnormal situation, avoid the engine because can not obtain the machine oil lubrication and draw the jar, lead to the engine to scrap.

Description

Engine oil protection device for mining auxiliary transport vehicle engine

Technical Field

The utility model relates to a colliery is transportation equipment field in the pit, especially a mining auxiliary transport vehicle engine oil protection device.

Background

The trackless rubber-tyred coal mine auxiliary transportation device has become the development direction of mine auxiliary transportation of coal mine enterprises, and the trackless rubber-tyred coal mine vehicles for mines have safety problems of different degrees in use at present, wherein the outstanding appearance of the problems is that the mine vehicles adopt an electric protection mode to monitor and early warn when the vehicles are in failure underground, and the underground environment is moist, so that the electric protection device is easy to lose efficacy and the situation of misinformation occurs. This problem has become a significant problem in assisting vehicle management operations. According to the safety regulation requirements of the underground coal mine explosion-proof diesel locomotive, the explosion-proof diesel locomotive needs to be immediately and automatically protected to stop when any one parameter of the exhaust temperature, the cooling temperature, the surface temperature of an engine, the loss water level of cooling liquid, the engine oil pressure and the like exceeds the standard.

disclosure of Invention

The utility model aims to solve the technical problem that to prior art not enough, provide one kind and be used for protecting the engine in the engine oil leakage, the mining auxiliary transport vehicle engine oil protection device that can auto-stop under the unexpected circumstances such as engine oil pressure hangs down.

The utility model aims to solve the technical problem that realize through following technical scheme, a mining auxiliary transport vehicle engine oil protection device, include the air supply pipeline that links to each other with the gas starter, be equipped with gas circuit switch valve and starting valve on the air supply pipeline in proper order, its characteristics are:

The system is provided with a gas-cut-off cylinder and an oil-cut-off cylinder which are used for controlling the stop of an engine, wherein the gas-cut-off cylinder and the oil-cut-off cylinder are connected in parallel and then are connected with the middle part of a shuttle valve through a branch gas circuit;

one end of the shuttle valve is connected with an air source pipeline between the air path switching valve and the starting valve through an air path I, and the air path I is provided with a stop valve;

The other end of the shuttle valve is connected with a gas path II connected with a gas source, a pilot control valve II is arranged on the gas path II, and a pilot control valve I is arranged on the gas path II between the pilot control valve II and the shuttle valve;

The driving end of the pilot control valve I is communicated with an engine oil pressure pipeline,

The driving end of the pilot control valve II is connected with an air source pipeline between the starting valve and the air starter through an air circuit III; and a delay valve is arranged on the gas path III, and a gas storage pipe is arranged on the gas path III between the delay valve and the pilot control valve II.

compared with the prior art, the utility model, a engine oil protection device replaces the oily electric protection system of machine for in case the accident takes place when mining auxiliary vehicle engine is using or the state of placing for a long time, machine oil leaks, and machine oil pressure is low, and the engine can automatic shutdown in the very big underground environment of dark and noise, avoids the engine because can not obtain the machine oil lubrication and draws the jar, leads to the engine to scrap.

Drawings

FIG. 1 is a schematic structural diagram of an engine oil protection device of an auxiliary transport vehicle for a mine.

Detailed Description

The following further describes embodiments of the present invention in order to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.

The utility model provides a mining auxiliary transport vehicle engine oil protection device, includes the air supply pipeline 12 that links to each other with the gas starter, is equipped with gas circuit on-off valve 1 and starting valve 5 on the air supply pipeline 12 in proper order.

The system is provided with a gas cut-off cylinder 8 and an oil cut-off cylinder 9 for controlling the stop of the engine, wherein the gas cut-off cylinder 8 and the oil cut-off cylinder 9 are connected in parallel and then are connected with the middle part of one shuttle valve 3 through a branch gas circuit; one end of the shuttle valve 3 is connected with an air source pipeline 12 between the air path switch valve 1 and the starting valve 5 through an air path I14, and a stop valve 2 is arranged on the air path I14; the other end of the shuttle valve 3 is connected with a gas path II 13 connected with a gas source, a pilot control valve II 10 is arranged on the gas path II 13, and a pilot control valve I4 is arranged on the gas path II 13 between the pilot control valve II 10 and the shuttle valve 3.

The driving end of a pilot control valve I4 is communicated with an engine oil pressure pipeline, and the driving end of a pilot control valve II 10 is connected with an air source pipeline 12 between a starting valve 5 and an air starter through an air channel III 11; and a delay valve 6 is arranged on the air path III 11, and an air storage pipe 7 is arranged on the air path III 11 between the delay valve 6 and the pilot control valve II 10.

(1) Normal starting conditions: before starting the engine, the shutdown valve 2 controls the disconnection of the air path I14, the air path switching valve 1 controls the disconnection of the air source pipeline 12, and the startup valve 2 controls the disconnection of the air source pipeline 12. The engine oil pressure at the driving end of the pilot control valve I4 is zero, and the pilot control valve I4 is in a conducting state; the drive end of the pilot control valve II 10 has no air input, the pilot control valve II 10 is in a disconnected state, the air passage II 13 is in a disconnected state, the air cut-off cylinder 8 and the oil cut-off cylinder 9 have no air source input, and the engine can be started normally.

and opening the air path switch valve, inputting an air source, pressing the input control end of the starting valve 5 at the moment, and starting the air starter by pressing the starting valve 5. The pressure of engine oil is increased to drive the pilot control valve I4 to be disconnected; meanwhile, the air source passes through the delay valve 6, the delay valve 6 is fast in air intake and slow in air exhaust, and the air source with certain pressure is stored in the air storage pipe 7. And the gas circuit III delays the gas supply to the driving end of the pilot control valve II 10 under the action of the delay valve 6 and the gas storage pipe 7, and drives the pilot control valve II 10 to be switched on after the pilot control valve I4 is switched off.

(2) Normal shutdown conditions: when the engine needs to be stopped, the stop valve 2 is pressed down, the air path I14 is communicated, the pressure gas acts on the gas-cut cylinder 8 and the oil-cut cylinder 9 through the shuttle valve 3, and the engine is stopped.

(3) The engine oil protection working condition is as follows:

The first condition is as follows: under the condition of normal starting condition, when engine oil breaks down and can't establish pressure, pilot control valve I4 is in the state of conducting always, and 6 work of delay valve are accomplished the back, and III 11 air supplies the air to II 10 drive ends of pilot control valve of gas circuit, and II 10 of pilot control valve switch on, and II 13 of gas circuit switch on this moment, and pressure gas acts on the cylinder of cutting off the gas and the cylinder of cutting off the oil through the shuttle valve, and the engine shuts down.

Case two: under the condition of normal operation of the engine, when the engine oil leakage pressure is low, the pressure loss of the driving end of the pilot control valve I4 is changed from a disconnected state to a connected state, the air passage II 13 is connected, the pressure gas acts on the gas cutoff cylinder 8 and the oil cutoff cylinder 9 through the shuttle valve 3, and the engine stops.

The air path switch valve 1 is used for providing an air source for starting and stopping the engine.

The stop valve 2 is a stop control element of the engine oil protection device, and can realize the stop of the engine when the system starts to work normally.

The shuttle valve 3 plays a role in selection, when the whole system starts to work in advance, a gas source starts to input power gas, the pilot control valve II 10 controls the gas circuit II 13 to be conducted, the pilot control valve I controls the gas circuit II 13 to be conducted, the oil-cut cylinder 9 and the gas-cut cylinder 8 are in an extending state, and the state is a shutdown state, so that the engine is stopped.

The pilot control valve I4 is a core element of the engine oil protection device, the pilot control valve I4 is connected with an engine oil pressure port of the engine, and the pilot control valve I4 is controlled through the engine oil pressure, so that the engine air-break cylinder 8 and the engine oil-break cylinder 9 are controlled, and the engine oil protection of the engine is realized.

the starting valve 5 is a starting control element for the engine to enter an operating state. The starting valve 5 is pressed down, and the air source provides power for the air starting machine to realize the starting of the engine. While the delay valve 6 is supplied with air.

the delay valve 6 is a core element of the engine oil protection device and is characterized by rapid air intake and slow air exhaust.

The gas storage pipe 7 is a core element of the engine oil protection device and is characterized in that gas is stored, so that a certain air pressure is kept in the pipeline, and the pilot control valve II 10 is ensured to be in a gas-off state.

The gas-cut-off cylinder 8 and the oil-cut-off cylinder 9 are stop executing elements of the engine, and when the cylinders extend out, the engine is stopped.

the pilot control valve II 10 is a core element of the engine oil protection device and provides a gas source for stopping and starting an engine in the process of entering a system.

Claims

1. the utility model provides a mining auxiliary transport vehicle engine oil protection device, includes the air supply pipeline that links to each other with gas starter, is equipped with air circuit switch valve and starting valve, its characterized in that on the air supply pipeline in proper order: